Photograph-enlarging apparatus



Feb. 25, 1930. 'c. F. sMm-l rnowoemra snumeme APPARATUS Filed Feb. 14, 1927 2 Sb gets-Sheet Feb. 25, 1930. c. F. SMITH 1,748,523

PHOTOGRAPH ENLARGING APPARATUS Filed Feb. 14. 1927 2 Sheets-Sheet 3 g [HIE 1 /0 a I: 1 a XJMHIIHIQ HLif' j l WW IIW@ iqmzsjkf'zmil vwe'mtoz Patented Feb. 25, 1%36 i 9 CYRUS SIITE'L', GE COLVILLLE, l-UkST-IINGTON Application filed February 14, 1927. Serial No. O71.

This invention relates to aoparatns (le- Figure 8 is a view illustrating, in diagram, si ned ior making enlargen ents of photothe pro ectmn ot the enlarged image and the raphs. The primary puroose of the r f r l he image.

uresby characters a housing cl tion is to provide a means whereby,

' the projection of the enlc rged imausual means provided or that 1 suitable border or other ernain placed in close proximity to the nega e be illuminated and photographed on the e L d (d with an openinp I camera 3 the lens tu J 'cetcd at l. ll ithin n 5 provided with and arranges in this to opening are lamp incandescei t lamp inderstood that the ll properly wired so that one or more of the lamps will be illuminated when sitized mater'al receiving the on image, thereby to produce a tinted or bis-in border or ornamentation as a part of th largement.

A further object is to provi of this character which is core cient and can be used either vii 9 is remov lily mounted within back of the jecting the image hori 'ontally or vtl one partit on 5 and has found most convenient in the d 2 alls of which are other place where the enlargement hemp; r *ated at 11 so as made. s v l or lights 12 and A further object is to provide a 1" tneso boin held detaehably by means or which a sharpl onoline 1 turn buttons let, The largement of a picture 0141 l pr oreceive between theina simultaneously with the pro order mat or the like fused enlargement of a borf clamped between the vice versa.

With the foregoing and view which will appea; as t proceeds, the invention reside nation and err-L ngement of pi details of construction herein box projecting into the marginal portion of ans provided with ditlnsit preferred, hmvever, the

and claimed, it being an lerst l an b is, ensed with and 112L7- changes in the p ecise embodiment of the 'aor projectingthe image vention herein disclosed may be made if i the camera to the the scope of what is claimec v from the spirit of the invention. Should the lioht box he dis- In the accompanying drawings the pro 2 hous' 3' id be secured fer-red form of the invention has been shown. 1115, in a door, wall or the like A1) In said drawings, ranged to receive the re s of natural light. Figure l is a View partly in si l r Assuming that the light box 15 is used for and partly in section of the apparatus eonthe purpose or producing an enlargement of stitnting the present invention. a photograph, the negative N is placed be- Figure is a ection on line i igure l tween the glass plates 12 and 13 and if the L1 the lamp bulbs being removed. photograph is to be provided with a tinted or difl'used border, a mat B having the desired border printed thereon is also held between the plates 12 and 13 in proper position relative to the negative. The structure is set up at the desired distance from the sensitized surface S designed to receive the enlarged image and light is projected from the box 15 through the diffusing glasses 16 and the negative N and thence through the camera 3 the lens of which has been shown in diagram at L in Figure 3. The lamp in the light box 15 has been indicated at A in Figure 3. When the lamps 8 are lighted the mat B will be illuminated thereby and this illuminated mat will be photographed by the camera so as to produce an enlarged diffused reproduction of the border about the enlargement on the sensitized material S.

Obviously by regulating the light back of the negative N and within the housing 2 various effects can be produced inthe formation of an enlargement. It is even possible to produce a sharp clear-cut enlargement of the border and a diffused enlargement of the picture by varying the exposures to produce the desired result.

If desired the frame 9 can be mounted so as to slide laterally into and out of position Within the housing, one or more slots being provided in the wall of said housing to receive the frame. Such a construction is so obvious that detailed illustration thereof is not deemed necessary.

What is claimed is:

1. A device of the class described including a housing, a lens supported outside of the housing for minute adjustment relative thereto, said lens constituting means for projecting an image from within the housing to a sensitized surface outside of the housing, a partition extending across the housing and having an opening. said partition dividing the interior of the housing into separate compartments, a frame removably mounted within the opening, transparent plates carried by the frame constituting means for gripping and holding a negative and a border mat. lamps carried by the partition for directing light rays on to the mat at the lens side thereof, light diffusing means hack of the frame, that portion of the housing back of the frame and partition and containing one of the light compartments and the diffusing means being bodily removable from the balance of the housing, thereby to expose the frame for removal.

2. A device of the class described including a housing, a lens supported outside of the housing for minute adjustment relative thereto, said lens constituting means for projecting an image from within the housing to a sensitized surface outside of the housing, a partition extending across the housing having an op ning, a frame removably mounted on one side of the partition and in the openmy own, I have hereto affixed my signature.

CYRUS FERRIS SMITH. 

